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            VOLUME

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VOLUME is dialog-based program which enables to calculate the volume between two surfaces created by SurGe. It can be run from Surge Project Manager (see button Vol. calc) and looks like this:

The usage of VOLUME is easy, but some points should be emphasized:

• Both upper and lower surface cannot be specified as constants. At least one surface must be specified as a grid file.
  If both surfaces are specified as grid files, the grids must have the same sizes and the same domains.
• The volume can be limited by planes defined in a separate file. The name of file is arbitrary, but the file must have the following format:
  b[1]
  x1 y1 z1
  x2 y2 z2
  x3 y3 z3
  b[2]
  x1 y1 z1
  x2 y2 z2
  x3 y3 z3
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  where:
  x1 y1 z1, x2 y2 z2  and  x3 y3 z3  are coordinates of three points defining the plane
  b[i] =1, if the volume has to be calculated above the plane
  b[i] =0, if the volume has to be calculated below the plane
• If a file containing the boundary is specified, grid nodes outside the boundary are not involved into volume computation.
• The grid obtained as a result of volume computation can be saved as a file. The name of the file is VLf.GRa. There is also a possibility to specify a file containing x and y coordinates. Then VOLUME will create the file VL.DTa with the same x and y coordinates and z values corresponding to the grid.